柳湾煤矿钻孔瓦斯抽放量的数值分析

Numerical Analysis of Gas Drainage Quantity from Drilling Holes of Liuwan Coal Mine

利用钻孔抽放煤层中的瓦斯,降低煤层瓦斯含量和压力,为矿井安全生产提供保障,是高瓦斯矿井采用的主要手段之一。文章通过对不同钻孔瓦斯抽放量的观测统计,采用数值分析手段,分析比较了钻孔的抽放能力,为矿井提高瓦斯抽放率提供参考依据。

Taking advantage of drilling holes to drainage gas from coal seam to decrease gas contains and pressure,can provide safeguard for safety production,and this is one of the main methods for high-gassy coal mine. Different drainage quantity from different drillings is observed and statistic,and numerical analysis method is used to drainage performance,and this can provide reference for raising gas drainage rate.